1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_MACHPCB_H 27 #define _SYS_MACHPCB_H 28 29 #include <sys/stack.h> 30 #include <sys/regset.h> 31 #include <v9/sys/privregs.h> 32 #if defined(__lint) 33 #include <sys/thread.h> 34 #endif /* __lint */ 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 /* 41 * This file is machine dependent. 42 */ 43 44 /* 45 * Machine dependent per-thread data. 46 */ 47 #define MAXWIN 8 /* max # of windows currently supported */ 48 49 /* 50 * The system actually supports one more than the above number. 51 * There is always one window reserved for trap handlers that 52 * never has to be saved into the pcb struct. 53 */ 54 55 /* 56 * Distance from beginning of thread stack (t_stk) to saved regs struct. 57 */ 58 #define REGOFF SA(MINFRAME) 59 60 #ifndef _ASM 61 62 /* 63 * The struct machpcb is always allocated stack aligned. 64 */ 65 typedef struct machpcb { 66 char mpcb_frame[REGOFF]; 67 struct regs mpcb_regs; /* user's saved registers */ 68 caddr_t mpcb_wbuf; /* pointer to wbuf */ 69 caddr_t mpcb_spbuf[MAXWIN]; /* sp's for each wbuf */ 70 struct rwindow mpcb_rwin[2]; /* windows used while doing watchpoints */ 71 caddr_t mpcb_rsp[2]; /* sp's for pcb_rwin[] */ 72 int mpcb_wbcnt; /* number of saved windows in pcb_wbuf */ 73 uint_t mpcb_wstate; /* per-lwp %wstate */ 74 kfpu_t *mpcb_fpu; /* fpu state */ 75 struct _fq mpcb_fpu_q[_MAXFPQ]; /* fpu exception queue */ 76 caddr_t mpcb_illexcaddr; /* address of last illegal instruction */ 77 uint_t mpcb_illexcinsn; /* last illegal instruction */ 78 uint_t mpcb_illexccnt; /* count of illegal instruction attempts */ 79 int mpcb_flags; /* various state flags */ 80 int mpcb_wocnt; /* window overflow count */ 81 int mpcb_wucnt; /* window underflow count */ 82 kthread_t *mpcb_thread; /* associated thread */ 83 uint64_t mpcb_pa; /* pcb physical */ 84 uint64_t mpcb_wbuf_pa; /* pointer to wbuf - physical */ 85 } machpcb_t; 86 #endif /* ! _ASM */ 87 88 /* mpcb_flags */ 89 #define FP_TRAPPED 0x04 /* fp_traps call caused by fp queue */ 90 91 /* 92 * We can use lwp_regs to find the mpcb base. 93 */ 94 #ifndef _ASM 95 #define lwptompcb(lwp) ((struct machpcb *) \ 96 ((caddr_t)(lwp)->lwp_regs - REGOFF)) 97 #endif 98 99 #ifndef _ASM 100 struct kmem_cache; 101 extern struct kmem_cache *wbuf32_cache; 102 extern struct kmem_cache *wbuf64_cache; 103 #endif 104 105 #ifdef __cplusplus 106 } 107 #endif 108 109 #endif /* _SYS_MACHPCB_H */ 110